<template>
  <div class="login">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
    >
      <h3 class="title">若依后台管理系统</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          auto-complete="off"
          placeholder="账号"
        >
          <svg-icon
            slot="prefix"
            icon-class="user"
            class="el-input__icon input-icon"
          />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon
            slot="prefix"
            icon-class="password"
            class="el-input__icon input-icon"
          />
        </el-input>
      </el-form-item>
      <el-form-item
        v-if="captchaEnabled"
        prop="code"
      >
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon
            slot="prefix"
            icon-class="validCode"
            class="el-input__icon input-icon"
          />
        </el-input>
        <div class="login-code">
          <img
            :src="codeUrl"
            class="login-code-img"
            @click="getCode"
          />
        </div>
      </el-form-item>
      <el-checkbox
        v-model="loginForm.rememberMe"
        style="margin: 0px 0px 25px 0px"
      >
        记住密码
      </el-checkbox>
      <el-form-item style="width: 100%">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width: 100%"
          @click.native.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <el-button />
        <div
          v-if="register"
          style="float: right"
        >
          <router-link
            class="link-type"
            :to="'/register'"
          >
            立即注册
          </router-link>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2018-2024 ruoyi.vip All Rights Reserved.</span>
    </div>
  </div>
</template>

<script>
  import { getCodeImg } from '@/api/login'
  import Cookies from 'js-cookie'
  import { encrypt, decrypt } from '@/utils/jsencrypt'

  export default {
    data() {
      return {
        codeUrl: '',
        loginForm: {
          username: 'admin',
          password: 'admin123',
          rememberMe: false,
          code: '',
          uuid: '',
        },
        loginRules: {
          username: [{ required: true, trigger: 'blur', message: '请输入您的账号' }],
          password: [{ required: true, trigger: 'blur', message: '请输入您的密码' }],
          code: [{ required: true, trigger: 'change', message: '请输入验证码' }],
        },
        loading: false,

        // 验证码开关
        captchaEnabled: true,

        // 注册开关
        register: false,
        redirect: undefined,
      }
    },
    watch: {
      $route: {
        handler: function (route) {
          this.redirect = route.query && route.query.redirect
        },
        immediate: true,
      },
    },
    created() {
      this.getCode()
      this.getCookie()
    },
    methods: {
      getCode() {
        getCodeImg().then((res) => {
          this.captchaEnabled = res.captchaEnabled == undefined ? true : res.captchaEnabled
          if (this.captchaEnabled) {
            this.codeUrl = `data:image/gif;base64,${res.img}`
            this.loginForm.uuid = res.uuid
          }
        })
      },
      getCookie() {
        const username = Cookies.get('username')
        const password = Cookies.get('password')
        const rememberMe = Cookies.get('rememberMe')
        this.loginForm = {
          username: username === undefined ? this.loginForm.username : username,
          password: password === undefined ? this.loginForm.password : decrypt(password),
          rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
        }
      },
      handleLogin() {
        this.$refs.loginForm.validate((valid) => {
          if (valid) {
            this.loading = true
            if (this.loginForm.rememberMe) {
              Cookies.set('username', this.loginForm.username, { expires: 30 })
              Cookies.set('password', encrypt(this.loginForm.password), {
                expires: 30,
              })
              Cookies.set('rememberMe', this.loginForm.rememberMe, {
                expires: 30,
              })
            } else {
              Cookies.remove('username')
              Cookies.remove('password')
              Cookies.remove('rememberMe')
            }
            this.$store
              .dispatch('Login', this.loginForm)
              .then(() => {
                this.$router.push({ path: this.redirect || '/' }).catch(() => {})
              })
              .catch(() => {
                this.loading = false
                if (this.captchaEnabled) {
                  this.getCode()
                }
              })
          }
        })
      },
    },
  }
</script>

<style rel="stylesheet/scss" lang="scss">
  .login {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background-image: url('../assets/images/login-background.jpg');
    background-size: cover;
  }
  .title {
    margin: 0px auto 30px auto;
    text-align: center;
    color: #707070;
  }

  .login-form {
    border-radius: 6px;
    background: #ffffff;
    width: 400px;
    padding: 25px 25px 5px 25px;
    .el-input {
      height: 38px;
      input {
        height: 38px;
      }
    }
    .input-icon {
      height: 39px;
      width: 14px;
      margin-left: 2px;
    }
  }
  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }
  .login-code {
    width: 33%;
    height: 38px;
    float: right;
    img {
      cursor: pointer;
      vertical-align: middle;
    }
  }
  .el-login-footer {
    height: 40px;
    line-height: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;
  }
  .login-code-img {
    height: 38px;
  }
</style>
